Determine the number of significant figures for the following:

a. 34.6209

b. 0.003048

c. 5010.0

d. 4032.090

Answers and explanation:

A has six significant figures. This is because all nonzero numbers and zeros between numbers are significant.

B has four significant figures. This is again because all nonzero numbers and zeros between numbers are significant.

C has five significant figures. This is because all nonzero numbers, zeros between numbers and zeroes after a decimal and number are significant.

D has seven significant figures. This is again because all nonzero numbers, zeros between numbers and zeroes after a decimal and number are significant.